232 Memoirs on the Coleoptera 



more sparsely pubescent. Length i8 mm. Arizona. [G. decipiens 

 Horn] , mexicana Chd. 



Strial intervals finely, feebly, rather closely and evenly punctulate as 

 in janus and the other preceding species 15 



15 — Body, excepting the ferruginous prothorax above and beneath, 

 black, the elytra without obvious bluish lustre; head large, elongate, 

 four-fifths as wide as the prothorax, the eyes well developed and 

 prominent, the tempora behind them strongly and circularly round- 

 ing to the neck; surface coarsely and closely punctate, the central 

 red spot distinct; antennae rather long and slender, the first four 

 joints black, the remainder paler, brown; palpi black, pale at tip; 

 prothorax fully a fourth longer than wide, widest before the middle, 

 the parallel sides broadly and evenly arcuate, becoming moderately 

 sinuate for a short distance before the obtuse hind angles; foveae 

 rather sharply impressed, and with very feeble extension traceable 

 anteriorly nearly to the apex; surface somewhat coarsely, densely, 

 subrugulosely punctate and with suberect pale pubescence; elytra 

 narrow, twice as long as wide (cf'), barely, or not quite twice as 

 wide as the prothorax, of the usual outline; striae fine, feebly micro- 

 punctulate, the subscutellar series rather finely punctured; anterior 

 male tarsi with the first three joints dilated and very obliquely pro- 

 duced externally, the first barely as long as the next two. Length 

 (d^) 17.0-18.0 mm.; width 5.7-5.8 mm. Kansas atripes Lee. 



Body smaller, narrower, but, at the same time, more ventricose, the 

 head and prothorax relatively much smaller; coloration and general 

 sculpture nearly similar; head slightly elongate, only very little 

 narrower than the prothorax, the eyes rather large, very prominent, 

 at their own length from the base, the tempora more converging 

 behind them to the neck than in atripes and much more feebly, 

 evenly arcuate; red spot small and feeble; punctures close, smaller 

 than in atripes; anterior parts more sparsely and very coarsely 

 punctato-rugose, nearly flat, scarcely biimpressed; antennae nearly 

 as in atripes; prothorax less elongate, smaller, of almost similar 

 outline, but with the parallel sides rather more arcuate, the basal 

 sinus longer and more gradually formed, the angles narrowly blunt, 

 slightly prominent laterally; surface and foveae nearly similar, the 

 thin side margins in the same way sharply and strongly reflexed, the 

 general punctuation less coarse; elytra four-fifths longer than wide, 

 much more than twice as wide as the prothorax and almost four 

 times as long, feebly inflated behind but nearly of the usual outline, 

 the striae fine, the subscutellar series distinct; anterior male tarsi 

 very moderately dilated, the first joint as long as the next two. 

 Length (cf ) 15.5 mm.; width 5.4 mm. Texas (Amarillo), — -Shantz. 



melanopus n. sp. 



16 — Body large, moderately convex, not very slender, dullish in lustre, 

 black, excepting the dark rufo-ferruginous prothorax above and 

 beneath; head but slightly elongate, three-fourths as wide as the 

 prothorax, with very prominent eyes, the tempora very short, 

 circularly rounded to the neck, only two-thirds as long as the eyes; 

 surface coarsely and subrugosely punctate; anterior half broadly 



